Drilling apparatus



3 sheets-sheet 1v J. D. RUSSELL DRILLING APPARATUS July 25, i961Original Filed Aug. 4, 1952 o m M o mi .v .W uw Nm Qm. QN NN a. mm NN aN. .m\ I i i i o L f W fj Jr.lld w i I1 .H 1 AH ll. .h s Nw. QM. .i lhun Q QQ Hl S Nm L lwlilliiAi mi* @Q W I m 1 I- H H @i Nm. mm E www"July 25, 196i .1. D. RUSSELL DRILLING APPARATUS 3 Sheets-Sheet 2Original Filed Aug. 4, 1952 FIC-3.5

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mvENron: JOHN D. RUSSELL ATTORN EY July 25, 1961 J. D. RUSSELL DRILLINGAPPARATUS 3 SheecS-Sheel'. 3

Original Filed Aug. 4, 1952 lll/1 INVENTOR: JOHN D. RUSSELL ATTORNEYtional oscillatory gathering arms 9.

United States Patent() 2,993,685 DRILLING APPARATUS .lohn D. Russell,Bradfordwoods, Pa., assigner to Joy Manufacturing Company, Pittsburgh,Pa., a corporation of Pennsylvania Application Jan. 20, '1956, Ser. No.560,458, which is a division of application Ser. No. 302,527, Aug. 4,`1952. Divided and this application Dec. 11, 1956, Ser. No. 627,640

16 Claims. (Cl. 262-7) This invention relates to drilling apparatus andmore particularly to a drilling apparatus especially designed for use intunnel work for drilling the tunnel face.

This application is a division of my copending application Serial No.560,458, filed January 20, 1956, now matured into Patent No. 2,907,481,granted October 6, 1959, which is a division of Serial No. 302,527,tiled August 4, 1952, now Patent No. 2,796,969.

An object of the present invention is to provide an improved drillingapparatus having improved adjustable mounting means for the drill.Another object is to provide an improved drilling apparatus especiallydesigned for use in tunnel work. Yet another object is to provide animproved adjustable supporting structure for a drill embodying guidemeans whereby the supporting structure may be quickly mo-ved between itsadvanced operating position and its retracted transport position. Astill further object is to provide a novel arrangement of a battery ofdrills and improved adjustable mounting for the drills providing forquick positioning of the drills Yat the face for ready retraction of thedrills from the face into out-of-the-way transport positions. These andother objects and advantages of the invention will however hereinaftermore fully appear.

In the accompanying drawings there is shown for purposes of illustrationone form which the invention may assume in practice:

-ln these drawings:

FIG. l is a plan view of the improved drilling apparatus.

FIG. 2 is a side elevational View of the apparatus shown in FIG. '1.

FIG. 3 is an enlarged cross sectional view taken on line 3 3 of FIG. 2.

FIG. 4 is a detail vertical section taken on line 4-4 of FIG. 3.

FIG. 5 is a detail vertical section taken on line 5-5 of FIG. 3.

FIG. 6 is Van enlarged fragmentary vertical section taken on line 6-6 ofFIG. l, with parts' omitted showing v a portion of the drill carriageand an associated guide bar.

FIG. 7 is an enlarged detail section taken on line 7--7 of FIG. 8.

generally designated 1.

The loading machine generally comprises a main frame 2 mounted on rearsteering wheels 3 and on front steering and crawler traction devices 4.Pivotally mounted at 5 on a frame structure 6 carried on the main frame2 is an inclined tiltable conveyor frame 7 which carries at its forwardlower portion a gathering and loading head 8 in turn having mountedthereon conven- These gathering 2,993,685 Patented July 25, 1961 2 armsare movable in out-of-step relation for gathering loose m-aterial ormuck from the tunnel floor and for moving the same rearwardly andupwardly onto a conrveyor 10 carried by the conveyor frame 7.

The improved drilling apparatus may assume various forms and hereincomprises a battery of drills, generally designated 11, comprisingparallel cylindrical tubular guiding members or guide bars 15 whichextend forwardly and downwardly above the loading machine and these barsare pivotally mounted at their rear ends to the upper portions ofvertical side frames 16 (FIGS. 2 and 3) mounted on the main frame 2 ofthe loading machine. These guide bars' at their forward portions arecarried by -brackets 17 adjustably secured as by clamps 18 to atransverse horizontal supporting bar 19 carried by and secured at itsends to the sides of the upper portion 'of the tiltable head frame 20 ofthe loading head, as shown in FIGS. 1 and 2. A liuid jack 20 connectedbetween the base frame 2 and the head frame 20l servesto tilt the lattertogether with the frame 7 about the pivot 5. When the head frame 20 istilted with the conveyor frame the guide bars' 15 tilt therewith andthere is relative pivotal movement between the guide bars about theirpivotalmounting on the forward supporting bar v19 and their rear pivots.Mounted for movement longitudinally along these guide bars 15 is atransverse carriage frame 21 having longitudinally spaced upper guiderollers 22 engaging the upper sides of the guide bars and rear guiderollers 23 engaging the under sides of the guide bars at points spacedrearwardly of the rear upper rollers, in the manner shown in FIG. 6.Swivelly mounted on this carriage frame are a plurality herein desirablythree relatively adjustable pivoted boom frames or jibs` 24, 25 and 26similar to those disclosed in the copending Curtis and Fish application,Serial No. 216,612, filed March 20, 1951, owned by the assignee of thepresent invention, and'now matured into Patent No. 2,791,399,

5 dated May 7, 1957. These boom frames extend forf 34 and 35respectively for swinging the boom frame in vertical and horizontalplanes relative to the loading machine to vary the operating positionsof the rock drills with respect to the tunnel face. Pneumatic feedingmotors 36 on the guide frames 30 serve to feed the rock drills back andforth along their guideways, in a wellknown manner. j

The carriage frame 21 may be retracted upwardly along g the inclinedguide bars 15 by suitable means such as cable drums 37 (FIG. 3)journaled on a horizontal cross shafting 38 and cables 39 would on thesedrums extend upwardly around guide sheaves 40 journaled on alignedtransverse horizontal shafts 41 respectively engaging the guidebars 15at the tops of vertical side frames 16 and on which the rear ends of theguide bars are pivotally mounted as shown to tilt in vertical planes.These cables extend forwardly and downwardly from these sheaves intoconnection at 42 (FIGS. 1 and 2) with the carriage frame 21. The drumsmay be manually rotated by a hand crank 43 attachable to either end of atrans- Y verse shafting 44 likewise journaled in the vertical sideframes 16, and gears 45 on the shafting 44 mesh with gears 46 secured tothe drums. For locking the drill carg riage 2.1 in retracted position,pawls 47 (FIGS. 3 and 5 are secured to a horizontal shafting 48 arrangedparallel with and above the shafting 44 and likewise journaled'inlthevertical side frames 16, and these pawls engage the teeth of thegears 45 to hold the drums against rotation in unwinding direction.toward gear engaging position by coil tension springs 49 (FIG. 4)connected to levers S]` secured to the pawl-shaft 48, and cams 51operated by hand levers 52 engage the levers 50 to move the pawls out ofengagement with the gears against the action of these springs, and thecams 51 hold the pawls in released position.

When the drill carriage frame 21 is in its forward lowered position onthe inclined guide bars 15, as shown in FIG. 8, with the rock drills 31in operating position in adjaceny to the tunnel face, clamp arms 53ypivoted on transverse axes at 54 on the carriage frame are swingabledownwardly and rearwardly over the projecting front ends of the guidebars 15, as shown in FIGS. 7 and 8, and clamping plates 55 suitablyguided within the clamp arms are adjustable manually by screws 56 intoclamping relation to the guide bars to hold the carriage frame firmly inlowered adjusted position. These clamp arms 53 may be swung up out ofthe way, as shown in FIG. 6, during retraction of the drill carriage.The clamp arms are desirably pivoted on horizontal shafts 57 (FIG. 7) onwhich the upper front guide rollers 22 are journaled to swing about axescoincident with the axes of the front guide rollers. The carriage framehas lugs 58 engageable with spring abutments 59 (FIG. 8) for yieldinglylimiting the forward movement of the carriage along the guide bars 15.

Carried by the carriage frame 2.1 is a conventional pneumatic motor 60(FIG. l) for driving a fluid pump 61 for pumping uid such as oil underpressure from a tank 62 on the carriage frame to the iluid cylinders 34and 35 for adjusting the drill boom frames. A suitable conventionalcontrol valve mechanism (not shown) may be provided for controlling the4ilow of iluid under pressure from the pump discharge to the boomadjusting cylinders. Fluid under pressure such as compressed air may besupplied to the rock drills 31 and the feed motor 36 from any suitablesource.

The general mode of operation of the improved drilling apparatus will beclearly apparent from the description given. When the loading machine isproperly positioned near the tunnel face, the battery of rock drills 31may be lowered along the inclined guide bars and the drill boom frames24, 25 and 26 may be adjusted, as shown in FIG. 8, to locate the drillsin the desired operating positions with respect to the tunnel face. Therock drills may be operated and fed forwardly along the guide frames 30to eiect drilling of the blast holes in proper locations in the tunnelface, and when drilling has been completed the battery of drills may beretracted on the machine by the cable and drum mechanism, and themachine may be retracted to a position remote from the face. Explosivecharges may then be placed in the drilled holes and the charges fired toshoot down the rock at the face. The loading machine may then beadvanced toward the face and the oscillating gathering arms 9 may bedriven to effect gathering of the muck from the floor and moving of thesame upwardly and rearwardly onto the conveyor 10 of the machine. 'I'heconveyor 10 elevates the muck thereon and discharges the same onto aconveyor mechanism 63, as is fully disclosed in the parent application.

As a result of this invention an improved drilling apparatus is providedwhereby the working face of a tunnel may be quickly drilled and the faceblasted thereby to expedite the tunneling operation. By the provision ofthe improved drilling apparatus embodying the battery of drills and thenovel adjustable mountings therefor there is provision for quickpositioning of the drills at the face and ready retraction of the drillsfrom the face into out-of-the-way positions when drilling is completed.These and other advantages of the invention will be clearly apparent tothose skilled in the art.

While there is in this application specifically described The pawls areyieldingly urgedy one form which the invention may assume in practice,it will be understood that this form of the same is shown for purposesof illustration and that the invention may be modied and embodied invarious other forms without departing from its spirit or the scope ofthe appended claims.

What I claim as new and desire to secure by Letters Patent is:

l. -In combination, a base frame, a tiltable support pivotally mountedon said base frame, an elongated guide frame extending generallylongitudinally of said base frame and pivotally mounted at its rear endon said base frame to tilt relative to the latter with said tiltablesupport, a pivoted support between the forward end of said guide frameand said tiltable support, and a support for a drilling tool mounted onsaid guide frame for movement longitudinally therealong.

2. A combination as set forth in claim l wherein a carriage is movableback and forth along said giude frame, and said support for the drillingtool is pivotally mounted on said carriage to tilt relative thereto.

3. A combination as set forth in claim 2 wherein said tool support is inthe form of an elongated vertically swingable drill jib extendinglongitudinally forwardly above said guide frame with the tool extendinglongitudinally in advance of said guide frame.

4. A combination as set forth in claim l wherein said base frame carriesupstanding side supports on the upper portion of which said guide frameis pivotally mounted with the pivots located above the rearward portionof said tiltable support.

5. The combination, in a tunneling apparatus, a loading machine having afront loading head for gathering loose muck from a tunnel floor, anelongated guide mounted on said loading machine and extending generallylengthwise of the loading machine above said loading head said guideproviding a guideway inclined forwardly and downwardly along the upperportion of the loading machine, a swivelled, vertically swingable drilljib carrying a drilling tool, means for mounting said drill jib on saidguide for movement back and forth along said guideway between a raisedinoperative position and a lowered operative drilling position, meansfor moving said drill jib along said guideway to locate said drillingtool in a drilling position a substantial distance in advance of saidloading head, and means for limiting the forward movement of said drilljib along said guideway, said drill jib when retracted on said guideoverlying the latter with said tool located rearwardly of the front ofsaid head to enable gathering by the latter when the tool is retracted.

6. A combination as set forth in claim 5 wherein a tiltable framecarryng said loading head and means is provided for swivelly supportingsaid guide at its forward end on said tiltable frame, said drill jibmovable forwardly along said guideway from a raised retracted positionwith the drilling tool above the loading head to a lowered advancedposition with the drilling tool extending forwardly in advance of theloading head.

7. In a drilling apparatus, an elongated guide extending generallylengthwise of the apparatus and providing a guideway, a support for saidguide, a carriage frame movable back and forth along said guidewaybetween retracted and forward positions on said guide, a boom frameswivelly mounted on said carriage frame to swing in a vertical planerelative thereto about a horizontal transverse axis, said boom frameextending generally longitudinally of said guideway above the latter, adrill carried at the forward end of said boom frame and extendinglongitudinally in advance of said guide when said carriage frame is inits forward position, a device at the rear portion of said guide andconnected to said carriage frame for retracting the latter, and areleasable lock for locking said carriage frame in retracted positionand releasable to permit movement of said carriage frame forwardly alongsaid guide, said boom frame when said carriage frame is in retractedposition overlying said guide with the drill in retracted inoperativeposition with respect to said support.

8. Drilling apparatus as set forth in claim 7 wherein said guide isforwardly and downwardly inclined, said retracting device operating tomove said carriage frame upwardly and rearwardly along said inclinedguideway, said lock operative to hold said carriage frame againstmovement from its retracted position downwardly along said guide, saiddrill when said carriage frame isretracted not only assuming itsretracted inoperative position but also being elevated with respect toits forward operating position.

9. A drilling apparatus as set forth in claim 7 wherein a plurality ofswivelled, vertically tiltable drill supporting boom frames are mountedon said carriage frame, one at each side of the apparatus, and areswivelled to swing horizontally to locate the drills laterally beyondthe sides of said support.

10. In combination, a moblie base carrying supporting means including atiltable front support having a transverse pivot, an elongated inclinedguide supported by said supporting means, said guide pivoted on atransverse pivot parallel with the pivot of said front support, saidguide supported at its front end on said front support and extendinggenerally lengthwise of said base above the latter, a carriage movablealong said guide between a raised retracted inoperative position and alowered advanced operative position, a drilling tool mounted on saidcarriage and extending forwardly longitudinally of said base, and meanson said base for tilting said front support and for holding the same intilted positions, said guide assuming diierent angular positions aboutits pivot relative to said front support as the latter is tilted aboutits pivot.

1l. A combination as set forth in claim l0 wherein said guide supportingmeans includes a rear transverse pivot for said guide on said basewhereby when said front support is tilted tilting of said guide aboutits rear pivot occurs.

12. In a drilling apparatus, a base, a frame mounted on said base andinclined forwardly and downwardly with respect to said base, meansproviding a transverse pivot for the rear portion of said frame, anelongated guide overlying said frame and inclined forwardly anddownwardly with respect thereto, means on said frame providing a pivotalconnection between the forward portion of said frame and said guide,means on said base providing a transverse pivot for the rear portion ofsaid guide, and a support for a drilling tool mounted on said guide formovement back and forth longitudinally thereto.

13. A drilling apparatus as set forth in claim 12 wherein means isprovided for tilting said frame about its pivot, said guide as saidframe is tilted assuming different `angular positions about its forwardpivot relative to said frame.

14. A drilling apparatus as set forth in claim 13 wherein said toolsupport comprises a vertically tiltable drill jib swivelly mounted toswing horizontally relative to said guide and overlying said frame whensaid tool support is retracted on said guide, and said drill jibextending forwardly a substantial distance in advance of said frame whensaid tool support is in its forward position on said guide.

15. The combination, in a tunneling apparatus, comprising a loadingmachine having a loading head for gathering loose muck from the tunnelfloor, an elongated guide mounted on the upper portion of said loadingmachine during drilling, said drill jib being retractable along saidguideway and extending generally lengthwise of the loading machine, saidguide overlying said loading head and providing a longitudinal guidewayinclined forwardly and downwardly, a swivelly mounted drill jib mountedon said inclined guideway for movement back and forth relative to saidguide, said jib swingable in vertical planes relative to the loadingmachine on its swivel mounting, means for limiting the forward movementof said drill jib along said guideway, and a drilling tool carried bysaid swiveled drill jib and extending longitudinally in advance of theloading machine to enable operation of said loading head when the toolis retracted with said drill jib located rearwardly of said head.

16. In a drilling apparatus, a mobile base, an elongated guide framemounted in an inclined position on said base `and providing a guidewayextending generally lengthwise of said base and inclined forwardly anddownwardly, a carriage mounted on said guide frame for back and forthmovements along said guideway, means for limiting the rearward andforward movements of said carriage along said guideway, means forlowering said carriage downwardly along said guideway and for retractingsaid carriage along said guideway, a swivelly mounted drill jib mountedon said carriage and extending generally lengthwise of said guide frame,and a drilling tool carried at the forward end of said jib, said toolwhen said carriage is in raised retracted position on said guide frameextending rearwardly of the front end of said guide frame, said drilljib swingable in a vertical plane on its swivel mounting relative tosaid carriage and when retracted overlying said guide frame, and saidjib when the carriage is in lowered advanced position extending asubstantial distance forwardly of the front end of the guide frame.

References Cited in the file of this patent UNITED STATES PATENTS298,625 Saunders May 13, 1884 1,098,014 Carter May 26, 1914 1,992,129Parker Feb. 19, 1935 2,456,745 Slater Dec. 21, 1948 2,730,334 Sullivan..v Jan. 10, 1956

